The search for clues to humanity's creation is often linked to ancient astronauts who came here in flying vehicles throughout Earth's history, leaving behind clues to their encounters with humans. Pictographs and megalithic monuments throughout the planet describe human interaction with ancient astronauts, allowing those in our timeline to piece together what happened in the past that shapes out destiny today. UFOs in History - Art

Mesopotamia -- The Hakatha (Laws of the Babylonians) states:

"The privilege of operating a flying machine is great. The knowledge of flight is among the most ancient of our inheritances. A gift from 'those from upon high'. We received it from them as a means of saving many lives."

Chaldea "The Sifrala" contains over one hundred pages of technical details on building a flying machine. It contains words which translate as graphite rod, copper coils, crystal indicator, vibrating spheres, stable angles, etc.

Alexander the Great purportedly gave a description of "dozens of silver disk-like objects" entering and leaving the Jaxartes River in 337 BC. Alexander, so the story goes, then became obsessed with the craft and spent many hours in a primitive diving bell searching for them. (Source: History Channel "Unidentified Submarine Objects")

Some modern UFO enthusiasts have pointed to ancient aircraft as evidence for advanced technological civilizations in the distant past, or as support for the ancient astronaut theory.

Did King Pakal fly off in a spaceship after he died? Ancient Astronaut Theory speaks of this depiction on Pakal's sarcophagus lid as preparing for space flight. He sits on a chair, his foot on a pedal, his hands manipulating the controls, and his nose is a breathing apparatus. Pakal is seen as a Maize God falling into the open mouth of death, an image conflated with the glyph for a Black Hole. A World Tree emerges from his stomach indicating Earth's renewal through Pakal's death. Then again it could mean so many other things.

Vimana is a word with several meanings ranging from temple or palace to mythological flying machine described in Sanskrit epics. References to these flying machines are commonplace in ancient Indian texts, including descriptions of their use in warfare. As well as being able to fly within Earth's atmosphere, vimanas were also said to be able to travel into space and under water.